Machine for drilling, boring, milling, &amp;c.



WQJIHAGMAN. A MACHINE PoR MILLING, BORING, MILLING, aw.

' APPLIoATIN IILIID AUG.1'9. 1905.V

Witnesses:

- AIIIVQIIIIOI' I I yL17]QLI'IMJLAIAI.I-,a

Attprney PATENTED MAR. zo, I9o6.-

l i work, and the speed of the spindle, while sub- -zo while lthe speed provision might be made '3o from the following desciif tion,"taken 'in coril UN sTATEs PATENT oEEicE. WILLIAM J. HAGMAN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO NILES- BEMENT-POND COMPANY, OF JERSEY CITY, NEW JERSEY.

NIACIIINE FOB DILLING, BOFIING, MILLING, tc-

No. 815,697'. I Specification bf Letters Patent. Patented March 20, 1906. v I

` Application inea Anglia 19,1905. serai 110.274,841.

T0 al@ 11177107 if "WZ/ concern: l 12, a feeding-piece in the form of a bracket 55 Be it known that I, WILLIAM J. HAGMAN, a having sliding engagement with the arin of citizen of the United States, residing at Philathe saddle in a ath parallel with the aXis of delphia, Philadelphia county, Pennsylvania, the main spin le and having a bearing in (post-oiiice address, care Bementr'Miles vt which the rear end of the main spindle turns f (lompany, Philadelphia, Pennsylvania,)have freely Without the capacity for relative end- 6o invented certain iiew and useful 4Improvewise motion 13,a rack connectedwith the meritsin Machinesfor Drilling, Boring, Millbracket 12, and 14 a inion journaled inthe ing, &c., of which the following'is a specifica-K arm of the saddle andp engaging the rack and rio tion. A serving as means for feeding the spindle end- In certain classes of machines for drilling, wise. boring, milling, &c., the tool-carrying spin-v The Working ofthearts thus far referred dle isl of considerable size, -appropriate to a to is or may be preciselly as in other machines machine designed for comparatively heavy employing an endwise-'movable rotating spindle for the production of workby means 1 of a tool-carried at the. forward end of the 7o s indle, anda general arrangement ofparts t us far referred to as being associated with the spindle, :may be considered as merely f typial. Any pro er -toolsecued upon or within the forwar end of the Spindle 10 is ,75' given its movement of rotation, the' endwise adjustment of the spindle being eected bv the turning' of pinion 14. Attention, will now b e given to the secondary spindle and its attributes.

)ect to selectivechanges, is comparatively low. .It may be desirable vto employ` the saine-inachines :for Working small tools calling for higher speeds, and-.in such case,

ample, it would not be satisfactory ,to rotate the large and heavy spindle at the desired high speeds suited to the small tools. v My invention relates to improvements in this `class of machines and provides a small secondary spindle driven' at comparatively high speed 'through the intermediacy lof the slowermoving heav spindle.

the secondary spindle disposed' inxan-axial The invention' wi l bel readily-understood bore in the main spindle and capable of rotal vtion and vof endwise movementlftherein'; 16,"a i nection with the accompanying drawings,-in bushing separately secured to the forward end .85 .i whichlof the mam spindle 10, preferably by being Figure 1 is'a side elevation ef a mechanism secured Vin the socket-11 1n the main spindle, embodying'aii exempliiication of my inventhis .bushing forming a forward bearing for` tion; Fig. 2, a side. elevation of portions the secondary spin ke where it engages the I i 40 the main spindle.

thereof on'a larger scale, the spindles and forward end of the main spindle; 17, a pair of 90 their immediate accessories appearing in verlock-nuts screwed u on the secondary spindle tical longitudinal section; and Fig; 3', a vertinear its forward endp and abutting against that cal'longitudinal'section of the active end of forward face of bushing '15,' 18, the extreme forward or working end of the secondary spin- 'In the drawings, 1 indicates 'a portion of dle, the same projecting beyond the forward 95 the vertical frame portion or column ofthe end ofthemain spindle and beingarranged for drill-ing,I boring, or milling machine; 2, an havinga tool secured to it-as, for instance, armed saddle vertically adjustable thereon," by being provided with a tool-receiving 'y 3, an elevating-screw for adjusting the saddle socket, as shown;l 19, a pinion yfast onthc real' on thel column; 4, a sleeve xjournaled in the` end/of the secondary s indlc and abutting saddle 5, a gear fast on the sleeve; 6, a counagainst the rear end oft ie main spindle, this tcr-shaft journaled in the saddleyf, a pinion pinion 19 and the locknuts 17 forming fast on the counter-shaft and having driving thrust-surfaces carried. by' the secondary engagement .with gear 5 8, a splined drivingspindle 2l), a Arack having its forward 'end shaft; 9, gearing connecting the driving-shaft swiveled to the en'd of the secondary spin-r 105 With the counter-shaft; 10,' amain spindle dle, so that the secondary spindle is free to spli-ned in the sleeve; 11,' a tool-'holding turn while the rack E() remains stationary; socket in the front end ol" the main spindle; 21, a bracket projecting from feed-rack 13L Continuing with the drawings, 15 indicates I an and furnishing abearing in which the rack 20.1nay slide endwise; 22 a pinion journaled in bracket 21 and engaging rack 20; 23, a handle connected with the pinion 22, whereby the pinion may be turned and the rack 2() adjusted endwise; 24, a counter-shaft lioninaled'l in the feed-bracket 12; 25, a pinion fast on the forward end of this shaft; 2,a gear fast on the mainspindle and having driving engagement with pinion 25; 27, a gear 'fast on the rear end of counter-shaft 24 and` having driving engagement :with pinion 19, and 28 ra thrust-collar on the main spindle at the rear of the bearing of the main spindle in bracket 12.

Assume now that work with a .small tool running ateoinparatively high speed is to be done. In such case the parts are cinployed in the condition illustrated in the drawings, and the tool is to be secured to the end 18 of thesecondary spindle. As the main spindle turns at a given speed, it in an obviousmanner transmits rotation at higher rate to the secondary spindle through the medium of gears 26, 25, 27, and 19. The

`secondary spindle is incapable of end'wise .movement relative to the main spindle by reason of the restraint effected by the-locknuts 17 and the gear 19 acting as thrust members. t follows that as pinion 1e is operated to move lbracket 13 there is produced an endwise movement of the main spindle, in which movement the secondary spindle is forced to accompany it. The feeding mechanism for the main spindle becomes therefore utilized'as the feeding movement for the secondary spindle,and the main spindle while idle as a tool-carrying spindle i ,serves as an agent in imparting rotary and rectilinear movement to the secondary spindle. When the two spindles thus 'move together endwise in unison, the tail-rack 20 artakes of the same endwise movement pinion 22 being merely an adj usting device having no oflice when the secondary spindle is in use or not in use. Assume, on the other hand, that the work is to be done by a comparatively slow-moving tool carried by thc main spindle and that they secondary spindle is not needed. .In such case a milling-tool or the like might be secured to the forward end of the main spindle and the machine employed precisely as though the secondary spindle were not present, except that the secondary spindle will be idly turned at its comparatively high speed. This idle turning ol the secondary spindle and also the presence oi its forward end at the forwardend of the Vmain spindle is undesirable, and provision is 'made for throwing the secondary spindle out of action and l'oi retiring il'. When the secondary spindle is to be retired, lock-nuts l 17 are removed land hy means oi handle 23 tail-rack 2l) is caused to pull the secondary .spindle rearwardly until, say, its pinion 19 annee? comes against bracket 21. This shifting oil' the secondary spindle has disconnected pin'- ion 19 from gear 27 and has withdrawn tlr forward end 18 ci' the secondary spindle well back within the main spindle. The secondary spindle now remains non-rotary in retired position and bushing 16 may be removed from the forward end of the main spindle and the socket previouslYr occupied byl it be utilized in holding a tool). It is to be observed that when the secondary spindle is thrown out of action and retired in the manner explained it still partakes of' the endivise movement oi" the main spindle, owing to the fact that brackets 12 and 21 move as one under the influence of the feed mechanism oi the main spindle. The retiring movement for the secondary spindle as el'lectcd by the pinion 22 need 'therefore only be sullieicnt for the retiring purpose and may be independent ol' the length or the main spindle or ol" the extent of longitudinal motion iml'nuted to it by its feed mechanism.

I have used theteiins Hforward, rear, &c., in the merely relative sense.

The system is manifestly applicable. to quite a variety of' machines, whether the spindles be arranged horizontally or .vertically. indeed, with the drawingturned so that it may be viewed with the spindle verlical it may be taken as illustrating the adaptation of the system to :i vertical-spindle innchine.

I claim as my invention- 1. in a machine of the class described, the combination, substantially as set forth, el' a main tool-carrying spindle, mechanism for rotating it, a secondary tool-carrying spindle disposed axially within the main spindle, gearing connecting the main spindle with the secondary spindle to cause the turning of the former to turn the latter at higher rate, and

mechanism for disconnecting the gearing transmitting motion between the two spindles.

2. In a machine of the class described, the combination, substantially as set forth, oi a main tool-carrying spindle, meclninisni for rotatingiit and 'lor adjusting it longitudinally, a secondary tool-carrying spindle disposedv axially within the inain spindle, gearing connecting the main. spindle with the secondary spindle to cause the turning ol' the former to turn the latter at higher rate, and mechanism for disconnecting the gearing-transmitting motion between the two spindles.

`3. In a machine oll the class described, the combination, substantially as set forth, ol: a main spindle, mechanism vfor rotatingf it, a secondary spindle. disposed axially within the main spindle, gearing connecting the main spindle with the secondary spindle to cause the turning ol" the l'orincr to turn the latter at higher rate, incchan'sin for disconnecting theI gearing transmitting motion between the two -v zo.

spindles, and a feeding device connected with both the spindles for moving them longitudinally in unison.

4. In a machine of theclass described, the

combination, substantially as set forth, of a main spindle, mechanism for'rotating it, a

secondary spindle disposed axially within the main spindle, gearing connecting the main spindlel with' the secondary spindle to cause the turning of the former to turn the latter at gher rate, mechanism for disconnecting the gearing transmitting motion between the two spindles, and means for retiring the active vend of thesecondary spindle to Within the main spindle. t

5. In a machine of the class described, the combination, substantially as s et forth, of a main spindle, vmechanism for rotating it, a.

secondary spindle disposed axiallywithin the main spindle, 'thrust members coacting with the'two'spindles to cause them l'to move to- I j ustable feeding-piece :to

gether longitudinali gearing connectiniJr the main spindle with` thesecondary spindle to cause the turning .of the-.former to turnlther latter at higher rate, and aflonffitudinally-adthe spindles endwise. -4 l y 6. In a machine ofthe class described, the

, combination, substantially-,as set forth, of a main spindle, mecha' f secondary spindle dispos maingspmdle, thrust members 'coactmg with if rotating it, -a 'lally Within 4the thetwo spindles to cause tiienrto move together longitudinally, gearing connectin the main spindle with the secondaryvl spind e to Icau'se the turning of the former' to turn the latter at higher rate, a longitudinally-adjust- .n Wise, fand mechanis 1 able. feedingfpiece to shift the spindlesendm for disconnecting the gearing-transmitting motion between the two. .'spindles.

'.7. vIn a'xmachine of theclass described, the

-combination,. substantially vas set forth, of a .main spindle, mechanisrn for rotating it, a secondaryspindle' disposed axially within the main spindle, thrust members coactingwith the two spindles tocanse them -to movetoffgether longitudinally, gearing connectin the y *main s indie with thesecondary' spin d e to caus'eft e turning. of the formerto turn the 4latter at 'higher rate,a longitudinally-adjust- 'able feeding-piece 'togshift the spindles endwise', and mechanism" for disconnecting 'said-v ggearing and'for shifting thesecondary spndie endwise relativeto the main spindle;l

8. In a 'machine yof the class described, the

combination;substantially as set 4'forth, of af l mainspimlle, mechanism for rotating it andV ing l'or flic secomlary spindle, a thrnstfm'eme for" fecdingit 'cndwise, asecondary spindleV disposed, axiallyr within the -main sp1ndle,a

lbushing scpnrabl y secured tothe forward ond ol tllemain spindle and forming a bearber carried by the secondary spindle and en. gaging the rear end ofthe main spindle, lock- 65 nutsat the forward end ofthe secondary spindle to form thrust members atthe forward end of the main spindle, a pinion upon the rear end of the secondary spindle, a 'gear near the rearend of the main spindle and havin@ .7o transmitting connection With said pinion, and mechanism for throwing-said pinion out lof operation.l y t.,

9. In a-inachine of the class described, the combination,substantially as set forth, .of a 75 main spindle, mechanism for rotating-it andl for'feeding it endjvise, asecondary spindle disposed axially within the main spindle,a bushing separately' 'secured to thek forward end of the main spindle and forming a bear- 8o "ing for thesecpnda-ryspindle, athrust mem ber carried bythe secondary spindle andengaging therein` end of the main spindle, locknuts at the forward end ofthe secondary vspindle to form thrust lmembers at the forward 85 end of the mainspindle, a pinion upon the rear end of the secondary spindle, fa gear near the rear en'do f the main spindle `and having for feeding it endwise, a secondary spindle `disposed axially Within theinain spindle, a i

b usl1ingseparablysecured to theforward end ofthe main spindle and formmga bearing for the secondaryspindle, a thrust member car'- To 5 ried by the secondary spindle and engaging the rear end of the main spindle', lock-,nuts at the forward. end of the secrndary spindle to, form thrust members at tleforward end of'- the main spindle, a pinion upon therear end 1rov oftliesecondary spindle, a'gear near the rear end of the main spindlean'd having 'transmit- .ting connection with said. pinion, a rack dis-V posedi'n line with thefsecondary. spindle 'and swiveled to its rear, end, a' rack in line witli-r15 `the spindle'and swiveled to the rear end of fthe secondaryv spindle, a bracket engagedby said rack andI moving longitudinally in uni-4 fsonv with' the .main'spindle, and a pinion mounted in said bracket and engaging said,v 12o rack and serving to shift the seconda-r spin-` "dleend'wise relative to the main spind e.

j WILLIAM J. HAGMAN. VVitn'esses: n

' W. T. SEARS, p

W. Biken. 

